The remains of the suspension bridge

The Hapen Historic Trail, which crosses diagonally through Wulai District of New Taipei City and Datong Township of Yilan County, runs along the right bank of the upper reaches of Nanshi River and around the mountains. As it was required to cross the Polu River and Lumen River when traveling on this trail, the Government-General in Taiwan built a suspension bridge to facilitate crossing the river. However, the suspension bridges have been destroyed now, and mountaineers must wade across the river. If there is a typhoon or heavy rain, it is safer not to walk the trail.